Drainage & Culverts in Anchorage, Alaska

The solution depends on the source of the problem. Surface water pooling is often addressed with grading corrections and surface drainage channels. Water intruding near foundations typically requires a French drain system. Driveway flooding is usually solved with proper culverts and ditch grading. BTH Construction will assess your site and recommend the right solution — not the most expensive one. Contact us for a free assessment.

Culvert sizing depends on the drainage area contributing to the crossing, the slope of the ditch, and local rainfall and snowmelt volumes. In most residential driveway applications in Southcentral Alaska, 12" to 18" corrugated metal or HDPE culverts are common. For road crossings with larger drainage areas, larger culverts may be required. BTH Construction will size the culvert correctly for your specific site conditions.

Drainage system costs vary widely depending on the type of system, length of drain runs, depth, and site conditions. A simple driveway culvert installation may cost a few hundred to a few thousand dollars. A full French drain system around a foundation or across a large property can run significantly more. BTH Construction provides free estimates — request yours here.